eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676

Analysis

max time kernel
132s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-12-2024 14:08

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General

Target

eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe
Size

431KB
MD5

4962575a2378d5c72e7a836ea766e2ad
SHA1

549964178b12017622d3cbdda6dbfdef0904e7e2
SHA256

eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676
SHA512

911a59f7a6785dd09a57dcd6d977b8abd5e160bd613786e871a1e92377c9e6f3b85fe3037431754bbdb1212e153776efca5fadac1de6b2ad474253da176e8e53
SSDEEP

12288:JOKJim5EI9tVEw/JF4+D3q2IMbgiDK7mWasB:Jj9tL8ZMEiDfWb

Score

8^/10

credential_access discovery execution persistence privilege_escalation spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 8 IoCs

flow	pid	Process
23	4484	rundll32.exe
24	4484	rundll32.exe
30	3892	rundll32.exe
31	3892	rundll32.exe
45	3396	rundll32.exe
46	3396	rundll32.exe
47	1960	rundll32.exe
48	1960	rundll32.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Gxtuum.exe

Executes dropped EXE 3 IoCs

pid	Process
2608	Gxtuum.exe
1524	Gxtuum.exe
2540	Gxtuum.exe

Loads dropped DLL 6 IoCs

pid	Process
840	rundll32.exe
4484	rundll32.exe
1560	rundll32.exe
3892	rundll32.exe
3396	rundll32.exe
1960	rundll32.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Gxtuum.job	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1412	powershell.exe
4324	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gxtuum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
2416	netsh.exe
3672	netsh.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
4484	rundll32.exe
1412	powershell.exe
1412	powershell.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
3892	rundll32.exe
4324	powershell.exe
4324	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	powershell.exe
Token: SeDebugPrivilege	4324	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5088	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 2608	5088	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe	83
PID 5088 wrote to memory of 2608	5088	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe	83
PID 5088 wrote to memory of 2608	5088	eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe	83
PID 2608 wrote to memory of 840	2608	Gxtuum.exe	87
PID 2608 wrote to memory of 840	2608	Gxtuum.exe	87
PID 2608 wrote to memory of 840	2608	Gxtuum.exe	87
PID 840 wrote to memory of 4484	840	rundll32.exe	88
PID 840 wrote to memory of 4484	840	rundll32.exe	88
PID 4484 wrote to memory of 2416	4484	rundll32.exe	89
PID 4484 wrote to memory of 2416	4484	rundll32.exe	89
PID 4484 wrote to memory of 1412	4484	rundll32.exe	95
PID 4484 wrote to memory of 1412	4484	rundll32.exe	95
PID 2608 wrote to memory of 1560	2608	Gxtuum.exe	103
PID 2608 wrote to memory of 1560	2608	Gxtuum.exe	103
PID 2608 wrote to memory of 1560	2608	Gxtuum.exe	103
PID 1560 wrote to memory of 3892	1560	rundll32.exe	104
PID 1560 wrote to memory of 3892	1560	rundll32.exe	104
PID 3892 wrote to memory of 3672	3892	rundll32.exe	105
PID 3892 wrote to memory of 3672	3892	rundll32.exe	105
PID 3892 wrote to memory of 4324	3892	rundll32.exe	107
PID 3892 wrote to memory of 4324	3892	rundll32.exe	107
PID 2608 wrote to memory of 3396	2608	Gxtuum.exe	112
PID 2608 wrote to memory of 3396	2608	Gxtuum.exe	112
PID 2608 wrote to memory of 3396	2608	Gxtuum.exe	112
PID 2608 wrote to memory of 1960	2608	Gxtuum.exe	114
PID 2608 wrote to memory of 1960	2608	Gxtuum.exe	114
PID 2608 wrote to memory of 1960	2608	Gxtuum.exe	114

C:\Users\Admin\AppData\Local\Temp\eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe
"C:\Users\Admin\AppData\Local\Temp\eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe
  "C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\43266f2abbf198\cred64.dll, Main
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:840
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\43266f2abbf198\cred64.dll, Main
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:4484
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show profiles
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:2416
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\437139445115_Desktop.zip' -CompressionLevel Optimal
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1412
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\43266f2abbf198\cred64.dll, Main
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1560
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\43266f2abbf198\cred64.dll, Main
      4⤵
      Blocklisted process makes network request
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:3892
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show profiles
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:3672
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\437139445115_Desktop.zip' -CompressionLevel Optimal
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4324
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\43266f2abbf198\clip64.dll, Main
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:3396
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\43266f2abbf198\clip64.dll, Main
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1960

C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:1524

C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
fe3aab3ae544a134b68e881b82b70169

SHA1
926e9b4e527ae1bd9b3b25726e1f59d5a34d36a6

SHA256
bda499e3f69d8fe0227e734bbb935dc5bf0050d37adf03bc41356dfcb5bcca0b

SHA512
3fbd3499d98280b6c79c67b0ee183b27692dbc31acf103b4f8ca4dcdf392afff2b3aad500037f4288581ed37e85f45c3bbb5dcde11cddf3ef0609f44b2ecb280

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
fd252dc779057e73982ed35b2bd253da

SHA1
6c3bf7b1dedf640fc90de7bdf3b456d1ffdb1e8c

SHA256
372e07ccd9023096ccdff5c060084973b7c21f41179ec95cef0514854fbf05bd

SHA512
e2cdd4c229e3a543409db13bb0b40b0e00f642edb2ad50a9108662937ea190ce1212c165dfafdbd0ad2a58b83836afc8e289bd52f3381deffb66caa3b38c68f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\437139445115_Desktop.zip

Filesize
39KB

MD5
7ad420c8f103efdd4b8656377b08beb1

SHA1
bdf57352c516c152065ded19410d0b8caacdf457

SHA256
064482a17e8b5a17f6aad3d48dddc27ec48094e08f22c113aa0d65ba1d6e36a3

SHA512
3339c65e35c5b3c51d367958b0a38be63b610254c1688f54a2469fa6826aae4dcc8fef995da29cee0eb8a1ae05fac01e4ab9501c2bfc9c94e44755f76cd4041b

Download Submit
C:\Users\Admin\AppData\Local\Temp\_Files_\AssertResize.docx

Filesize
14KB

MD5
c30d2e4ac6391f51370ab3933461b2bc

SHA1
859033627e1da14585f97d43dcee904e2e8c8cba

SHA256
06f05b363f73d669b029ce6f129849c1fa0df57fe161b86b7e8da1b86040e937

SHA512
22f078ca4cef890ba8eede25a81d3e602d86a85aca7bdda9453f9dd34e0025c24be7930300ffe37e13dfd7943d47839663757c366fd9ae237e4d958abe754d30

Download Submit
C:\Users\Admin\AppData\Local\Temp\_Files_\ConvertUse.docx

Filesize
17KB

MD5
19e925f2819c4452be3c56750deda4fa

SHA1
948e65091ea825d896f616fc95880beb908c0cf2

SHA256
ae57c387e26d88ba9d6dfe6e359ed913116f45f4c5613cf1b2f46dfba9b9acaf

SHA512
e3bde690deb60f808bddd222a76d17069cf9f9774da333478e4925b1bba7ebd06c4f37ac09976ae5d89770298522ae072960ab1736cfbc7fba6c1fec42c2c7f8

Download Submit
C:\Users\Admin\AppData\Local\Temp\_Files_\GetPing.docx

Filesize
15KB

MD5
748c9ca544fe36d548d9876eefcd1ee8

SHA1
435b95fae6ae7060baffd7411332b031b4781288

SHA256
dde59e35bfde917478e3c1838b43b9f0de750ac4f9d3269a5b917bd6006e5389

SHA512
693f153e71b135ebfcf0e605addb0b918031c464a5cfc2261b14c1233b1cab490b3e79a4c0a5e3267c2fd962d19afdda93f70d9915ef343c4f20b40626214da0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0cdslth5.q1z.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\ee29ea508b\Gxtuum.exe

Filesize
431KB

MD5
4962575a2378d5c72e7a836ea766e2ad

SHA1
549964178b12017622d3cbdda6dbfdef0904e7e2

SHA256
eff5fad47b9c739b09e760813b2bcbb0788eb35598f72e64ff95c794e72e6676

SHA512
911a59f7a6785dd09a57dcd6d977b8abd5e160bd613786e871a1e92377c9e6f3b85fe3037431754bbdb1212e153776efca5fadac1de6b2ad474253da176e8e53

Download Submit
C:\Users\Admin\AppData\Roaming\43266f2abbf198\clip64.dll

Filesize
124KB

MD5
c2f3fbbbe6d5f48a71b6b168b1485866

SHA1
1cd56cfc2dc07880b65bd8a1f5b7147633f5d553

SHA256
c7ed512058bc924045144daa16701da10f244ac12a5ea2de901e59dce6470839

SHA512
e211f18c2850987529336e0d20aa894533c1f6a8ae6745e320fd394a9481d3a956c719ac29627afd783e36e5429c0325b98e60aee2a830e75323c276c72f845a

Download Submit
C:\Users\Admin\AppData\Roaming\43266f2abbf198\cred64.dll

Filesize
1.2MB

MD5
c6aabb27450f1a9939a417e86bf53217

SHA1
b8ef3bb7575139fd6997379415d7119e452b5fc4

SHA256
b91a3743c7399aee454491862e015ef6fc668a25d1aa2816e065a86a03f6be35

SHA512
e5fe205cb0f419e0a320488d6fa4a70e5ed58f25b570b41412ebd4f32bbe504ff75acb20bfea22513102630cf653a41e5090051f20af2ed3aadb53ce16a05944

Download Submit
memory/1412-33-0x000002291CAB0000-0x000002291CAC2000-memory.dmp

Filesize
72KB

Download
memory/1412-34-0x000002291CA90000-0x000002291CA9A000-memory.dmp

Filesize
40KB

Download
memory/1412-23-0x000002291C720000-0x000002291C742000-memory.dmp

Filesize
136KB

Download